Regenerative gas-lamp.



UNITED STATES Patented October 4, 1904.

I.PATENT OFFICE.

WILLIAM STANLEY MCLEVVEE, OF YARDLEY, PENNSYLVANIA, ASSIGNOR TO THETRENTON CONSTRUCTION COMPANY, A CORPORATION OF NEW JERSEY.

REGENEFIATIVE GAS-LAMP.

SPECIFICATION forming" part of Letters Patent No. 771,387', datedOctober 4, 1904.

Application iiled `ctober 3l, 1903. Serial No. 179,327. (No model.)

To all whom, it mmf "oncrn:

Be it known that I, WILLIAM STANLEY Mo- LuwEE, a citizen of the UnitedStates, residing at Yardley, in the county of Bucks and State ofPennsylvania, have invented certain new and useful Improvements inRegenerative Gras-Lamps, of which the following is a' specification.

My invention relates to improvements in regenerative gas-lamps in Vwhichthe gas is preheated by the hot products of combustion escaping from theflame and coming in contact with the preheating-chamber, through whichthe gas passes before it reaches the burner or burners. Y

The object of my invention is to construct a lamp in which the gas afterit has been heated will be allowed to expand, so as to reduce thequantity of gas consumption and produce a light of better quality andbrilliance than has heretofore been produced.

A further object of my invention is to provide a means of collecting andcarrying the hot air from the upper portion of the lamp down to thelower portion, so that the hot air may be mixed with the gas after thegas has expanded and before it reaches the burner or burners.

A still further object of my invention is to construct a valve by whichthe'supply of gas may be admitted lto one, two, or more of the burnersdesired.

In the drawings, Figure 1 represents a vertical sectional view of alamp, illustrating my invention. Fig. 2 represents a vertical sectionalview of a lamp, illustrating additional features of my invention. Fig. 3is an inverted sectional view as on line 3 3, Fig. 1. Figs. l, 5, and 6are views similar to Fig. 3, showing the parts in different positions;and Fig. 7 is an inverted sectional view as on line 7 7. Fig. 1. v

Referring to Figs. 1 and 2, A represents the supply-pipe, having aportion A', which is connected with the source of supply. Between theportions A and A of the supplypipe is interposed the preheating-chamberB. At the lower end of the supply-pipe A is an expansion-chamberC, inwhich the superheated gas is allowed to expand before it passes to theburnersD, consisting of incandescent mantles. Tubes Z connect eachburner with the expansion chamber C. The said tubes CZ are provided withopenings cl, through which the air is drawn into the tubes by thesuction caused by the gas passing up through the tubes. A valve E isprovided to control the supply of gas to the burners, which in thisinstance are three in number; but any desired number may be used. Thevalve E, as shown. in Figs. 3, 4, 5, and 6, is provided with arms e, c',and e2, which bind against lthe interior upper surface c of theexpansion-chamber C. The armsV when in the position shown in Fig. 3cover all the tubes (l, which connect with the expansion-chamber C. Toadmit the gas to one burner, the valve is turned in the direction of thearrow toY the position shown in Fig. 4, where one of the tubes d is openfor the admission of gas. As the arm e' is wider than the arm e and thearm e2 is wider than the arm e', the remaining tubes l will still beclosed. When the valve is turned to the position shown in Fig. 5, two ofthe tubes (l are open, and when the valve is turned to the positionshown in Fig. 6 all the tubes are open. The arms of the valve arecarried by a central hub E', which fits over the end of the supplypipeA. The gas from the supply-pipe A passes through the openings E2 in thehub E to' the expansion-chamber. A stem E3 is connected to the valve E`and a handle E4 upon the stem E3 is providedrto operate the valve. E5 isa pointer secured to the stem E3 and registers with marks orindicationsupon the under side of the expansion-chamber to show theposition of the valve.

In Fig. 1, F represents the globe, and G represents the casing whichsurrounds the supply-pipe A and the preheating-chamber B. Said casing isarranged to direct the hot air from the burners around the supply-pipe uand the preheating-chamber to heat the gas before it reaches theexpansion-chamber C. .After the gas has been expanded and leaves theexpansion-chamber C it is mixed with the air from the lower part of theglobe F, which is admitted through the openings d in the

